Suspect Adam Christopher Mayes, wanted in the disappearance and kidnapping of 12 year old Alexandria Bain and her 8 year old Kyliyah Bain has been added to the FBI’s 10 Most Wanted Fugitive List. The FBI has also added $100,000 to the reward fund offered for a break in the case. Adam Hayes has also just been charged with two counts of first degree murder in the death of Tennessee mom Jo Ann Bain and her 14 year old daughter Adrienne Bain. Adam’s wife, Teresa Mayes has also been charged with two counts of first degree murder. Previously, Teresa Mayes had been charged with especially aggravated kidnapping.

In an affidavit, Teresa Mayes said she was there when Adam Mayes killed Jo Ann Bain in a garage next to their home and that Adam Mayes also killed 14-year-old Adrienne Bain at that location.

Teresa Mayes also said her husband planned to kidnap Alexandria and Kyliyah.

Adam Mayes’ mother Mary is charged with four counts of Conspiracy To Commit Especially Aggravated Kidnapping.

The FBI added the suspect, Adam Mayes, to its list of 10 most wanted fugitives and added $100,000 to the reward fund offered for a break in the case. Mayes has been charged with killing Jo Ann Bain and her eldest daughter, Adrienne, in late April, but authorities believe he is still holding Bain’s younger daughters, 12-year-old Alexandria and 8-year-old Kyliyah.

“From an investigative standpoint, we keenly and firmly believe that Adam Mayes is out here somewhere with these two young children,” said Mark Gwyn, director of the Tennessee Bureau of Investigation. “And it’s going to be up to the public to help us if we’re to bring these children back home and place him in custody where he needs to be.”

As stated at Blink on Crime, “Adam Mayes believes Alexandria and Kyliyah are HIS DAUGHTERS and they were set to move to Arizona.” This can explain why only the mother and eldest daughter were killed and the two youngest are still believed to be alive as per the FBI.

Mayes’ mother-in-law told The Associated Press that Mayes thought he might be the girls’ father and it caused trouble in the marriage to her daughter, who’s jailed in the case.

VIDEO interview below with the sister of Tersa Bain, Bobbi Booth, who spoke to CNN’s Anderson Cooper on Tuesday about Adam Mayes and his relationship with her sister, who she said has mental health problems.

“I’ve known Adam for at least 25 years, and he’s always been weird and unusual … but I never dreamed he would do something like this,” she said.

She described him as aggressive and not trustworthy. He beat and threatened to kill her sister, said Booth, who pleaded with him to “do the right thing.”